#define _GNU_SOURCE
#include <sched.h>
#include <sys/types.h>
#include <sys/resource.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>

#include "proc.h"
#include "die.h"

void cpu_affinity(int cpu)
{
	int ret;
	cpu_set_t cpu_bitmask;

	CPU_ZERO(&cpu_bitmask);
	CPU_SET(cpu, &cpu_bitmask);

	ret = sched_setaffinity(getpid(), sizeof(cpu_bitmask),
				&cpu_bitmask);
	if (ret)
		panic("Can't set this cpu affinity!\n");
}

int set_proc_prio(int priority)
{
	int ret = setpriority(PRIO_PROCESS, getpid(), priority);
	if (ret)
		panic("Can't set nice val to %i!\n", priority);

	return 0;
}

int set_sched_status(int policy, int priority)
{
	int ret, min_prio, max_prio;
	struct sched_param sp;

	max_prio = sched_get_priority_max(policy);
	min_prio = sched_get_priority_min(policy);

	if (max_prio == -1 || min_prio == -1)
		printf("Cannot determine scheduler prio limits!\n");
	else if (priority < min_prio)
		priority = min_prio;
	else if (priority > max_prio)
		priority = max_prio;

	memset(&sp, 0, sizeof(sp));
	sp.sched_priority = priority;

	ret = sched_setscheduler(getpid(), policy, &sp);
	if (ret) {
		printf("Cannot set scheduler policy!\n");
		return -EINVAL;
	}

	ret = sched_setparam(getpid(), &sp);
	if (ret) {
		printf("Cannot set scheduler prio!\n");
		return -EINVAL;
	}

	return 0;
}

ssize_t proc_get_cmdline(unsigned int pid, char *cmdline, size_t len)
{
	ssize_t ret;
	char path[1024];

	snprintf(path, sizeof(path), "/proc/%u/exe", pid);
	ret = readlink(path, cmdline, len - 1);
	if (ret < 0)
		cmdline[0] = '\0';
	else
		cmdline[ret] = '\0';

	return ret;
}
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=35eeacf1820a08305c2b0960febfa190f5a6dd63'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=35eeacf1820a08305c2b0960febfa190f5a6dd63'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/ax25?id=35eeacf1820a08305c2b0960febfa190f5a6dd63'>ax25</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/ax25/af_ax25.c?id=35eeacf1820a08305c2b0960febfa190f5a6dd63'>af_ax25.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='35eeacf1820a08305c2b0960febfa190f5a6dd63'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-11 02:31:11 -0500</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-11 02:31:11 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ax25/af_ax25.c?id=35eeacf1820a08305c2b0960febfa190f5a6dd63'>35eeacf1820a08305c2b0960febfa190f5a6dd63</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/ax25/af_ax25.c?id=35eeacf1820a08305c2b0960febfa190f5a6dd63'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=35eeacf1820a08305c2b0960febfa190f5a6dd63'>f1227c7384ee01d3f029cc5f82223234e6456c5f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/ax25/af_ax25.c?id=35eeacf1820a08305c2b0960febfa190f5a6dd63'>net/ax25/af_ax25.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ax25/af_ax25.c?id=bed45f79a2afc9d7c279b880dfcac8f27d513b50'>bed45f79a2afc9d7c279b880dfcac8f27d513b50</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ax25/af_ax25.c?id=35eeacf1820a08305c2b0960febfa190f5a6dd63&amp;id2=bed45f79a2afc9d7c279b880dfcac8f27d513b50'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ax25/af_ax25.c?id=1ee18329fae936089c6c599250ae92482ff2b81f'>1ee18329fae936089c6c599250ae92482ff2b81f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ax25/af_ax25.c?id=35eeacf1820a08305c2b0960febfa190f5a6dd63&amp;id2=1ee18329fae936089c6c599250ae92482ff2b81f'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</div><div class='commit-msg'></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=35eeacf1820a08305c2b0960febfa190f5a6dd63'>Diffstat</a> (limited to 'net/ax25/af_ax25.c')</div><table summary='diffstat' class='diffstat'>